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The Bragg angle for a certain reflection from a powder specimen of copper is 47.75º at a temperature of 293 K and 46.60º at 1273 K. Find the coefficient of linear expansion of copper.
A microscope has a 12.0 x eyepiece and a 59.0 objective lens 20.0 cm apart. Calculate (a) the total magnification, (b) the focal length of each lens, and (c) where the object must be for a normal relaxed eye to see it in focus?
a string stretched between two fixed ends vibrates in its second harmonic with a frequency f=2 Hz. if the velocity that links the frequency and wavelength is equal to 40 m/s, find the wavelength of the stationary wave
The electric motor of a model train accelerates the train from rest to 0.820 m/s in 18.5 ms. Find the average power delivered to the train during the acceleration
the coefficient of static friction is 0.26. If you apply the minimum force needed to get the refrigerator to move, illustrate what will the acceleration then be?
Sheena can row a boat at 3.03 mi/h in still water. She needs to cross a river that is 1.10 mi wide with a current flowing at 1.55 mi/h. How long does it take her to cross the river
q1. planet zero has a mass of 5.0 acute 1023 kg and a radius of 2.0 acute 106 m. a space probe is launched
W hat is the ratio of an amplitude of the damped oscillations
A dragster starts from rest and accelerates down a track. Each tire has a radius of 0.320 m and rolls without slipping. At a distance of 401 m, estimate the linear speed of the dragster
A 10 kg block sits motionless on a table in spite of an applied horizontal force of 2 N. What are the magnitudes of the reaction force
A metal rod with a diameter of 2.30 cm and length of 1.10 m has one end immersed in ice at 32oF and the other end in water at 212oF. what is the thermal conductivity of this metal
A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. How deep is the well
An R = 67.8 ? resistor is connected to a C = 47.8 ?F capacitor and to a ?VRMS = 117 V, and f = 112 Hz voltage source. Calculate the power factor when the capacitor is replaced with an L = 0.335 H inductor
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